<script lang="ts" setup>
import { ref } from 'vue'

// 在线支付弹层
const paymentPopup = ref<UniHelper.UniPopupInstance>()

// 定义Props
const props = defineProps<{
  orderId: string
  amount: number
}>()

/** 打开弹层 */
const open = () => {
  paymentPopup.value?.open?.()
}

/** 关闭弹层 */
const close = () => {
  paymentPopup.value?.close?.()
}

// 支付渠道的索引
  const channelIndex = ref(0)
  // 支付渠道（方式）
  const paymentChannel = [
    {
      title: '微信支付',
      thumb: '/static/images/wechatpay-icon.png',
    },
    /* #ifndef MP-WEIXIN */
    {
      title: '支付宝支付',
      thumb: '/static/images/alipay-icon.png',
    },
    /* #endif */
  ]

// 暴露方法给外部组件使用
defineExpose({
  open,
  close,
})

const emit = defineEmits<{
    change: [index: number]
    confirm: [index: number]
    close: [],
  }>()

const activeIndex = ref(0)

const handleChange = (index: number) => {
  // 修改高亮
  activeIndex.value = index
  // 触发父组件的change事件
  emit('change', index)
}

</script>
<template>
  <uni-popup :is-mask-click="false" ref="paymentPopup" type="bottom" @maskClick="emit('close')">
    <view class="payment-container">
      <view class="payment-header">
        <text class="title">选择支付方式</text>
        <uni-icons class="uni-icons-close" size="18" color="#333" type="closeempty" @click="emit('close')"/>
      </view>
      <view class="order-amount">¥ {{ props.amount }}</view>
      <uni-list :border="false">
        <uni-list-item 
        v-for="(item,index) in paymentChannel"
        :key="item.title"
        :thumb="item.thumb"
        :title="item.title"
        clickable
        :selected="activeIndex === index"
        @click="handleChange(index)"
        >
          <template #footer>
             <uni-icons
              size="26"
              :color="activeIndex === index ? '#16C2A3' : '#d1d1d1'"
              :type="activeIndex === index ? 'checkbox-filled' : 'circle'"
            />
          </template>
        </uni-list-item>
      </uni-list>
      <button class="uni-button" @click="emit('confirm', activeIndex)">立即支付</button>
    </view>
  </uni-popup>
</template>


<style lang="scss">
.payment-container {
  min-height: 400rpx;
  border-radius: 30rpx 30rpx 0 0;
  background-color: #fff;
  padding: 10rpx 30rpx 40rpx;

  .payment-header {
    height: 88rpx;
    line-height: 88rpx;
    text-align: center;
    margin-bottom: 20rpx;
    font-size: 32rpx;
    color: #333;
    position: relative;
  }

  .uni-icons-close {
    position: absolute;
    top: 2rpx;
    right: 0;
  }

  .order-amount {
    padding: 10rpx 0 10rpx;
    text-align: center;
    font-size: 40rpx;
    color: #333;
  }

  :deep(.uni-list-item__container) {
    padding: 40rpx 0 !important;
  }

  :deep(.uni-list-item--hover) {
    background-color: #fff !important;
  }

  :deep(.uni-list-item__icon) {
    margin-right: 0;
  }

  .uni-button {
    margin-top: 40rpx;
  }
}
</style>